/*
 * Copyright (c) 2010-2023. Axon Framework
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.axonframework.common.lock;

/**
 * LockFactory implementation that does nothing. Can be useful in cases where a Locking Repository implementation needs
 * to be configured to ignore locks, for example in scenario's where an underlying storage mechanism already performs
 * the necessary locking.
 *
 * @author Allard Buijze
 * @since 0.6
 */
public enum NullLockFactory implements LockFactory {

    /**
     * Singleton instance of a {@link NullLockFactory}.
     */
    INSTANCE;

    /**
     * {@inheritDoc}
     * <p/>
     * This implementation does nothing.
     */
    @Override
    public Lock obtainLock(String identifier) {
        return NoOpLock.INSTANCE;
    }
}
